Home / 3,891.16-5,368.89-2,212.18

Finding the Fourth Proportional to 3,891.16, 5,368.89 and 2,212.18

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Solution

The fourth proportional to 3,891.16, 5,368.89 and 2,212.18 is: 3,052.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.16 : 5,368.89 = 2,212.18 : x
  2. Step 2: Convert to fraction form
    3,891.16/5,368.89 = 2,212.18/x
  3. Step 3: Cross multiply
    3,891.16x = 5,368.89 × 2,212.18
  4. Step 4: Simplify right side
    3,891.16x = 11,876,951.08
  5. Step 5: Solve for x
    x = 11,876,951.08/3,891.16
  6. Step 6: Final answer
    x = 3,052.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.